lo_import() — PostgreSQL built-in function

lo_import(): large object import. PostgreSQL miscellaneous functions — signature, volatility, version applicability and an illustrative example.

The Sev-1 Admin
The Sev-1 Admin  ·  1 min read

Summary

lo_import is a PostgreSQL built-in function in the Miscellaneous Functions group. PostgreSQL’s system catalog (pg_proc) describes it as: “large object import”.

Signature

lo_import has 2 documented overloaded forms:

lo_import(text) → oid
lo_import(text, oid) → oid

Argument and return types are taken from the pg_proc catalog; internal type names are shown using their readable SQL spellings (for example int4 is shown as integer). (Derived from the catalog — see the linked reference for the canonical documentation.)

Classification

  • Category: Miscellaneous Functions
  • Kind: Function
  • Volatility: VOLATILE — Marked VOLATILE — its result can change even within a single statement (for example, it may depend on time, sequences or the current session).
  • Returns: oid

Example

Illustrative form (replace placeholder values with your own data):

SELECT lo_import('abc');

The example above is illustrative and is meant to show calling syntax only; consult the linked PostgreSQL documentation for exact semantics, edge cases and accepted argument combinations.

Version applicability

lo_import is present across the surveyed releases (PostgreSQL 15, 16, 17, 18). On older major versions, behaviour may differ in detail — always check the documentation for the version you run.

Related & references

Reference: PostgreSQL documentation — Miscellaneous Functions.